ISIS Leader’s Ominous New York Message in Doubt, But US Still on Edge

U.S. officials are already concerned about the threat posed to the American Embassy in Baghdad, where a contingent of U.S. Marines is heading to provide additional protection. Top American intelligence and law enforcement officials have also expressed deep concern about Americans and Europeans who have traveled to Syria to join groups like ISIS, who could potentially return to use their deadly skills to attack the homeland.

“When you look at the terrorist training ground operations in Syria and Iraq, I believe it is one of the biggest threats,” Rep. Michael McCaul, Chairman of the House Homeland Security Committee, told ABC News’ “This Week” Sunday.

Former NYPD Commissioner Ray Kelly told ABC News that ISIS is “obviously a concern,” but the group has more pressing matters on its mind right now.

“I think it’s fair to say ISIS… would first concentrate on survival and also consolidating their gains,” said Kelly, who is a consultant for ABC News. “But I think it’s reasonable for us to think about an extended threat to the country… What we don’t need is another sanctuary where plans can be developed to attack the U.S.”